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r W. S. SHAHAN.

DOUBLE ACTING FORGE PUMP. No. 391,563. Patented Oct. 23, 1888.

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(No Model.) 2 Sheets-Sheet 2.

W. S. SHAHAN. DOUBLE ACTING FORGE PUMP.

No. 391,563. Patented Oct. 23,1888.

WIT/V588 INVENTOR,

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nrrnn STATES \VINFIELD S. SHAHAN, OF RUSSELL, KANSAS, ASSIGNOR TO HIMSELF AND FRANCIS M. MADISON, OF SAME PLACE.

DOUBLE-ACTING FORCEEPUMP.

SPECIFICATION forming part of Letters Patent No. 391,563, dated October 23, 1888.

Application filed May 14. 1888. Serial No. 273,829. (No model.)

To aZZ whom it may concern.-

Be it known that I, WINFIELD S. SHAHAN, of Russell, in the county of Russell and State of Kansas, have inventedanew and Improved 5 Double-Acting Force-Pom p, of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar-letters of reference indicate to corresponding parts in all the figures.

Figure 1 is a sectional elevation of my new and improved pump, taken on the line w of Fig. 2. Fig. 2 is a transverse sectional elevation on liney 3 of Fig. 1. Fig. 3 is a plan view;

1 and Figs. 4 and 5 are inverted plan views of the two intermediate blocks of the pump.

The invention will first be described in connection with the drawings, and then pointed out in the claim.

The body of the pump is composed of the four blocks A B O D, preferably of wood, and secured together by bolts E E. The lower block, A, is recessed at its lower surface, as shown at a, and formed with two apertures. 11 I), each provided with a flap-valve, c. The

block B is chambered at its lower surface, as shown at d d, which chambers inclose the said flap-valves c. Communicating with each of the said chambers (Z are the two openings 6 e. The openings 6 are each provided with a flap valve, 6 The block 0 is provided with the two cylinders G, in which the plungers F operate. These cylinders are in line with the apertures e. The n ndersu rface ofthe block 0 is 5 chambered, as shown atf, which chamber incloses the valves 6 and apertures e, andin the center is the aperture j, which communicates with the chamber f. The upper block, D, is apertured at g g to fit over the cylinders G, and it is also apcrtured in the center at g to receive and hold the air-chamber H over the aperturef, and this cylinder is provided near the block D with the eduction-tube J, through which the liquid is forced in a continuous stream.

K K are side standards, at the upper ends of which thelever L is fulcrumed. The plungers F are pivoted to the lever L each side of its pivot, so that by operating the single lever L both plungers are alternately raised and lowered causing the liquid to enter the cylinders G upon the upstroke of each plunger,and

to be forced into the chamber H and out the eduetion tube with each downstrok-e. The lower end of each plunger is provided with a flexible packingJz, formed with a concavecup,

i, at its lower surface, so that the pressure of water in the said cup will expand its lower edge and thus automatically pack the plunger. Upon the upstroke the packing relaxes and reduces the wear and friction.

M is a cross-piece held between the standards K K, and the upper end of the air-chamber H is slightly let into the under surface of the cross piece,so that itis firmly retained thereby.

When made 011 a small scale and designed for washing carriages, sprinkling lawns, gardens, &c., I shall it the pump in the bottom of a tank, N, as shown clearly in Figs. 1 and 2, the pump being held by a screw, j, or by other suitable fastening devices,and to one side of the tank I secure a foot-piece, O, by which the user may firmly hold the tank while operating the pump.

To prevent sedimentfrom entering the ports and chambers of the pumpl place a screen, It, over the lower apertures, b, as shown clearly in Figs. 1 and 2.

Having thus described my invention, I claim as new and desire to secure by Letters Patent A double-acting force-pump having its body formed of the block A, having its lower surface recessed at a, and provided with theapertures b, and flapvalves 0 over said apertures, the block 13, provided with the recess d, the apertures e e, and the flap-valves 6 over the apertures c, the block 0, having the recessf, aperturef, and the cylinders G, the said cylinders G being over the apertures e of block B, and the block D, provided with the apero tures g to receive the cylinders G,and with the air-chamber H, secured in a central aperture,

y, of the said block and having an eductiontube, J, in combination with the plungers F,

working in the said cylinders G, and the piv- 5 oted lever L, to which the plungers are connected, substantially as herein shown and described.

WINFIELD S. SHAHAN. Witnesses:

E. T. JONES, JEROME SMITH. 

